Water purification unit



FIG. 1 is a perspective view of my design for a water purification unit;

FIG. 2 is a left elevational view thereof of which the right side is amirror image thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a front elevational view of my design for a water purificationunit;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view of the water purification unit.

The ornamental design for a water purification unit, as shown and described. 